Systems and methods for controlling an electronic throttle valve
First Claim
1. A method for controlling a position of an electronic throttle valve of an internal combustion engine, the method comprising:
- determining a desired throttle valve position;
determining a first feed forward signal based on a rate of change between a previous throttle valve position and the desired throttle valve position;
determining a second feed forward signal based on a comparison of the desired throttle valve position to a limp home position of the throttle valve, in which the throttle valve is biased open by a spring;
using a summation of the first and second feed forward signals to actuate the throttle valve; and
after actuating the throttle valve according to the first and second feed forward signals, controlling the position of the throttle valve with a feedback controller so as to obtain the desired throttle valve position.
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Abstract
A method for controlling a position of an electronic throttle valve of an internal combustion engine is provided. The method includes determining a desired throttle valve position; determining a first feed forward signal based on a rate of change between a previous throttle valve position and the desired throttle valve position; and determining a second feed forward signal based on a comparison of the desired throttle valve position to a limp home position of the throttle valve, in which the throttle valve is biased open by a spring. A summation of the first and second feed forward signals is used to actuate the throttle valve. After the throttle valve has been actuated according to the first and second feed forward signals, the position of the throttle valve is controlled with a feedback controller to obtain the desired throttle valve position.
59 Citations
20 Claims
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1. A method for controlling a position of an electronic throttle valve of an internal combustion engine, the method comprising:
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determining a desired throttle valve position; determining a first feed forward signal based on a rate of change between a previous throttle valve position and the desired throttle valve position; determining a second feed forward signal based on a comparison of the desired throttle valve position to a limp home position of the throttle valve, in which the throttle valve is biased open by a spring; using a summation of the first and second feed forward signals to actuate the throttle valve; and after actuating the throttle valve according to the first and second feed forward signals, controlling the position of the throttle valve with a feedback controller so as to obtain the desired throttle valve position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling a position of an electronic throttle valve of an internal combustion engine to a desired throttle valve position, the system comprising:
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a motor coupled to the throttle valve; a throttle position sensor sensing a current throttle valve position; and a controller in signal communication with the motor and the throttle position sensor; wherein the controller determines a first feed forward signal based on a rate of change between a previous throttle valve position and the desired throttle valve position; wherein the controller determines a second feed forward signal based on a comparison of the desired throttle valve position to a limp home position of the throttle valve, in which the throttle valve is biased open by a spring; wherein the controller combines the first and second feed forward signals and sends them to the motor to actuate the throttle valve; and wherein after actuating the throttle valve according to the first and second feed forward signals, the controller compares the current throttle valve position to the desired throttle valve position and generates a feedback signal to correct the position of the throttle valve. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification